And funny you could really do that using straight succession wars tech too.
This is arguably my major issue with the Apollo. That it is logistically simple is a big bonus and a reason i kind of like the unit. But barely enough is done with to justify using even Star League tech. Slap ferro-fibrous and CASE there and it feels more modern and tougher, while still being relatively simple.
Artemis IV and double heat sinks don't really add much to the design. Without those, it can fire both LRMs and run for two turns without incurring heat penalties, or walk for four turn, possibly sufficient in most cases. It loses a bit of firepower, but only in direct-fire mode, not counting that at short-medium range using medium lasers over SPLs would more than compensate the lost firepower, though at the cost of heat. Then again weight freed from Artemis could be used for a couple of single heat sinks...
But, it could be worse. It could be one of those weird less than ideal FWL 'Mechs, or Kuritan or early Davion heat sink screw-ups (think the Panther or Davion Cataphract).
And there's a degree of sensibility in the Apollo, despite using limited amounts of advanced tech or perhaps because of it. It is simple enough maintenance isn't a problem for less trained techs. Loss of Artemis to battle damage isn't a major issue and can be replaced with something else as a field modification if need arises, while functioning Artemis is reasonably beneficial. As advanced tech proliferates, double heat sinks become common and replacement is easy, they also can be replaced with single heat sinks if need arises in Dropship transport bay (class D maintenance refit), like if a more important 'Mech needs replacement DHS, and if not the 'Mech is effectively immune to high temperatures or external heat.
And i suppose the small pulse lasers make sense too, as they discourage the pilot from going into close combat with missile armed 'Mech on the account of their pitiful range. Yet if an enemy comes close, the pilot can just slap "fire pulse lasers button" without regard for careful aiming, useful for lesser skilled or panicked pilots perhaps, not that this discourages the enemy from closing in really.
Battle value-wise, about 1200 BV for some fire-support is pretty good.
For contrast, the Succession Wars era Archer is 1350 BV for not much more direct firepower, and Trebuchet is only slightly cheaper than at 1190 the Apollo in exchange for lower endurance but greater speed. And the post-Helm versions cost 1350 BV for the Trebuchet 7M that offers greater mobility and Narc but still weak endurance (now exacerbated by XL engine), while the 4M Archer costs 1700 BV for Artemis IV and some armor and CASE.
What other options there are? The Catapult is more expensive at about 1400 BV (and not too common in the FWL), and it takes quite a while before modernized non-Arrow IV Catapult appears (Catapult CPLT-C4C appears in '55 but is evidently Davion exclusive at that point until the Operation Guerrero and Cappies regaining the manufacturing plant). The Dervish (about 1150) trades away long-range firepower and armor for short range firepower and speed, and its modernization (1400) (also Davion exclusive) doesn't change this but becomes more expensive. The Whitworth (980) is smaller, less durable and less powerful, and its "modernization" (930) is truly awful.
While not designed with BV in mind, the Apollo looks pretty good in that department, if you don't need special capabilities.