My main complaint with Halo: Spartan Assault is not what platforms it will be releasing on, or how it comes across as a shameless cash grab, or even how impractical it seems with regards to canon and Spartan Ops - rather, my issue, is how overwhelmingly average it looks, to the extent that, even if the game had literally no other issues, I still wouldn't give it a strong consideration for purchase. Even as some form of 'filler', a niche title to keep me occupied until Halo 5 releases, it doesn't seem particularly alluring. However, I will be keeping a (cautious) eye on this title as it develops. Who knows, it might be nice for a change of pace from this franchise.
In addition, I am concerned about the potential for abuse that micro-transactions could bring. More specifically, to what degree the game can be played and enjoyed without the player being incentivised to purchase additional content. This is Microsoft and Halo we're talking about - the former knows they can use the popularity of the latter to their advantage.