I realised that navigating this deck requires a lot of forward looking, and timing is essential to generate value.
When there is nothing on your opponent's board, I would prep my nursery to Angemon, play cards like Sora & Joe or even hard-cast that Angemon. Once an opponent's Digimon is fielded, Tommy/Blizzarmon helps freeze the cards that I could deal with in the current turn.
At LV5, Kimeramon can easily gain 3 colors for a -3000 DP wipe, or 4 colors for -4000 DP if he is able to inherit Rapidmon. If I am at exactly 3 security, pulling another BT7 Pulsemon from trash into Kimeramon would help me swing for +4/+5 memory, enough to move into Leopardmon with some to spare. In addition, Leopardmon can pull Mimicmon for that +2 memory, making the entire chain pretty efficient.
Leopardmon can finally move into Omegamon when the game calls for a much-needed deletion, and prepping for 2 hits in his following turn, replenishing Leopardmon to your hand.