Old artillery such as D-20 and D-30 are a lot more deadlier with drone assistance, enhancing their worth in the battlefield. This also applies to Hyacinths, Tyulpans, Pions, Malkas, Akasyas and Gvozdikas. On top of that, laser guided ammunition like Krasnopols and Kitolovs give these old weapons a modern one shot capability.
To be fair, Ukraine has fielded their own Krasnopol cousins, the Kvitnyk for 152mm and the Karasuk for 122mm but we seldom hear about these since the media prefers to credit kills to Excaliburs and HIMARS even if the Ukrainian shells did the actual kills.
New robot tanks. Anyway this video has stock footage of a modernized BMP-1 with 30mm 2A42 gun. What's with the 30mm these days? They are proving to be a hot gun in the battlefield.