I think the BattleForce system is just too vague so I'm going with the QSR. If Alpha Strike is like BattleForce, can I safely put it out of my options? I guess I'd just better buy the damn thing and take a look.
If you don't like the BattleFore QSR, you probably won't like Alpha Strike. If you do want to sample it, the PDF is only $15, which is a smaller hit to the wallet than buying the print book
1. What TROs to get for the 3025-3050 era? Is TRO 3039 now the only TRO to deal with the pre-clan era? Is TRO 3050 enough for the Clans? What does TRO 3055 have that is missing from TRO 3050?
3039 is the go-to for Succession Wars designs. It replaces TRO: 3025 and 3026, and includes both the unseen (without artwork) and the downgraded Star League designs from the 90s reprints of 3025. IIRC the Record Sheets 3039 Unabridged PDF doesn't contain the unseen sheets as they're in RS: 3085 Project Phoenix.
3050 is more or less a straight reprint of the FASA-era TRO 3050, less the unseen. The mechs, vehicles and aerospace fighters from TRO: 2750 have been added. It contains upgrades to the Inner Sphere mechs in TRO: 3039 and the 16 Clan OmniMechs.
3055 contains the first generation of Inner Sphere mechs designed to fight the Clans, plus Clan second-line designs and a couple of OmniMechs, and Clan OmniFighters for Aerospace combat. With it and 3050, you have a good overview of the Clan Invasion period and the years immediately thereafter.
2. Are there any other systems that allow/deal with continuity between campaigns? I know there's the Warchest system and the FM: Mercs system, but has any other system come out as well?
There's a campaign system in Strategic operations, but it's bookkeeping heavy. It adds a lot of versimilitude (you need to make maintenance rolls, with failures making equipment break down, for example), but it's a lot of hard work.
3. What books are available to give us scenarios to play in the 3025-3050 era?
The only print book at the moment is Starterbook: Sword and Dragon. It uses the warchest system to run two narrative campaigns - one player runs The Fox's Teeth, the other Sorenson's Sabres. The first player runs a series of missions until they reach a turning point one, with the other running the opponents. Then you swap and the other side runs missions with his unit. At certain turning points, the two units meet and fight.
In PDF format there's a number of Turning points books. While they're designed to either present a Warchest campaign or plug into one, you can easily run them as solo games. The 3025-era ones are:
Hitsorical Turning Points: Galtor
Hitsorical Turning Points: Mallory's World
Hitsorical Turning Points: Misery
Operational Truning Points: Death to Mercenaries! (this one lets you run the Dragoons/Kurita feud from the 4th Succession War)
4. Fiction - again, what books deal with the 3025-3050 era? I know that BT lore starts around Star League, but I want to fast-forward to just around the time the Clans arrive, and maybe a few years prior.
The following novels coverthe Succession Wars period, but are long out of print. BattleCorps had many of them as PDFs, but they've been taken down due to rights issues. There's also loads of BattleCorps fiction set in the timeframe
The Sword and the Dagger
Decision at Thunder Rift
Mercenary's Star
The Price of Glory
Warrior: En Garde
Warrior: Riposte
Warrior: Coupe
Wolves on the Border
Heir to the Dragon
The Blood of Kerensky Trilogy is the first Clan invasion trilogy:
Lethal Heritage
Blood Legacy
Lost Destiny
I'd recommend picking up the BattleCorps anthologies to get some good fiction that covers all timelines. The ones that aren't in print are availible as ebooks:
The Corps
First Strike
Weapons Free
Fire For Effect
5. What's the best way to buy BT products? I seem to be having problems sourcing BT items here in the UK, what stores carry BT stuff has limited selection. I know there is BattleCorps or DriveThruRPG but I prefer having physical copies so even if I bought the PDFs, I'd still print them out so I'd just rather buy the hardcopies.
BattleShop does international shipping, but it can be expensive. If your LGS is any use, they can order BattleTech products via Esvedium Games. Ral Partha Eruope have a small selection of older books they're selling cheap. Beside that, there's always Amazon or eBay.
The game I want to run would be something like this --- the players are members of their own mercenary unit and would take contracts, do missions, and improve both their arsenal of mechs as well as the skills of their mech pilots. We would keep track of damage, salvage, and inventory to a certain degree. I envision this as kinda like MechCommander, but only tabletop. So I'm looking around for a system that not only deals with prices/cost for armor, missiles, ammo, etc. but also deals with levelling up mech pilots and technicians as well.
Warchest simplifies the logistics, but does cover levelling up. The FM: Mercs or StratOps systems willlet you get into the nitty gritty, but it's a hell of alot of paperwork, especially for kids.