First, some aesthetic ideas:
- USE MWO MODELS/SOUNDS/whateves. PGI's done many wrongs to MWO, and artistic direction is not a part of it. I think we can all agree that MWO's mechs looks and sounds awesome, and since IGP holds the license to MW but very much overlaps with PGI, sharing resources should be easy. Besides, do you think anyone would say this sh*t resembles a 100-ton golem of death?

- make the hexagon tiles more significant. Has anyone played Greed Corp? I think its tile-based maps are not only beautiful but also makes map-making easier and more organized. Here's a picture:

With this kind of tile-designs, you could easily assign different qualities to each tiles and tile-combos, like -1 action point on mud/river tiles, +10% LRM deflection from 60-degree when taking cover behind a neighbor tile that is one-level higher, +10% chance of hit when shooting from a higher tile, etc. It would also make map designing more streamlined, and consequently easier.
- promote it as a turn-based strategy game with giant robots and stunning visuals, instead of...whatever MWT used to be. Make it look rich and luxurious instead of some cheap-a** f2p bullsh*t that looks like a coffee break game but takes ages to play. BattleTech is not exactly famous nowadays, but giant stomping robots still is and always will. And who knows? Maybe you could attract some lore nerds into the BT scene, like how MWO did to me.